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Flow of Canadian basin deep water in the Western Eurasian Basin of the Arctic Ocean
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2010 (English)In: Deep Sea Research Part I: Oceanographic Research Papers, ISSN 0967-0637, E-ISSN 1879-0119, Vol. 57, no 4, 577-586 p.Article in journal (Refereed) Published
Abstract [en]

The LOMROG 2007 expedition targeted the previously unexplored southern part of the Lomonosov Ridge north of Greenland together with a section from the Morris Jesup Rise to Gakkel Ridge. The oceanographic data show that Canadian Basin Deep Water (CBDW) passes the Lomonosov Ridge in the area of the Intra Basin close to the North Pole and then continues along the ridge towards Greenland and further along its northernmost continental slope. The CBDW is clearly evident as a salinity maximum and oxygen minimum at a depth of about 2000 m. The cross-slope sections at the Amundsen Basin side of the Lomonosov Ridge and further south at the Morris Jesup Rise show a sharp frontal structure higher up in the water column between Makarov Basin water and Amundsen Basin water. The frontal structure continues upward into the Atlantic Water up to a depth of about 300 m. The observed water mass division at levels well above the ridge crest indicates a strong topographic steering of the flow and that different water masses tend to pass the ridge guided by ridge-crossing isobaths at local topographic heights and depressions. A rough scaling analysis shows that the extremely steep and sharply turning bathymetry of the Morris Jesup Rise may force the boundary current to separate and generate deep eddies. © 2010 Elsevier Ltd.

Place, publisher, year, edition, pages
2010. Vol. 57, no 4, 577-586 p.
Keyword [en]
SWEDARCTIC 2007, LOMROG, Arctic Ocean, Deep water circulation, Eurasian Basin, Intermediate water circulation, Atlantic water, Boundary currents, Continental slope, Deep Water, Greenland, North Pole, Oceanographic data, Scaling analysis, Topographic steering, Water circulation, Water columns, Water mass, Arctic engineering, Ocean currents, Oxygen, Bathymetry, boundary current, data set, frontal feature, intermediate water, oceanic circulation, oxygen minimum layer, salinity, water column, water flow, Arctic, Canada Basin
National Category
Natural Sciences
Research subject
SWEDARCTIC 2007, LOMROG
Identifiers
URN: urn:nbn:se:polar:diva-1823DOI: 10.1016/j.dsr.2010.01.006OAI: oai:DiVA.org:polar-1823DiVA: diva2:653940
Note

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